Hopper railroad car having top hatch cover assembly
US-12286141-B2 · Apr 29, 2025 · US
Manholes; Inspection openings; Covers therefor
Manholes; Inspection openings; Covers therefor · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B65D90/10 |
| Official title | Manholes; Inspection openings; Covers therefor |
| Display label | Manholes; Inspection openings; Covers therefor |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 11 |
| 2017 | 14 |
| 2018 | 3 |
| 2019 | 6 |
| 2020 | 6 |
| 2021 | 6 |
| 2023 | 5 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Bulk container having steel overpack
US-12151868-B2 · Nov 26, 2024 · US
Gasket for hatch cover assembly of a rail car
US-11760393-B2 · Sep 19, 2023 · US
Hinged waterbox cover
US-11635265-B2 · Apr 25, 2023 · US
Hopper railroad car having top hatch cover assembly
US-2023113865-A1 · Apr 13, 2023 · US
Bulk container having steel overpack
US-2023043590-A1 · Feb 9, 2023 · US
Railroad car vented hatch cover assembly including a replaceable combined vented hatch cover protector and gasket
US-11548536-B1 · Jan 10, 2023 · US
Method for installing trays in plate tower
US-2021308598-A1 · Oct 7, 2021 · US
Gap filling shipping cap for leveraged refrigerant fitting
US-11060653-B2 · Jul 13, 2021 · US
Multiport Thief Hatch for Storage Tank
US-2021188538-A1 · Jun 24, 2021 · US
Closure arrangement for tank opening of agricultural machine
US-11014741-B2 · May 25, 2021 · US
System and method of monitoring a diagnostic system of a process control system
US-10983025-B2 · Apr 20, 2021 · US
Gasket for hatch cover assembly of a rail car
US-2021039687-A1 · Feb 11, 2021 · US
Device for opening and closing container lids
US-10836570-B2 · Nov 17, 2020 · US
Proppant discharge system having a container and the process for providing proppant to a well site
US-10662006-B2 · May 26, 2020 · US
Railway car hatch cover latch
US-10661815-B2 · May 26, 2020 · US
Equipment shipping, storage, and maintenance support system
US-10604339-B2 · Mar 31, 2020 · US
Gap filling shipping cap for leveraged refrigerant fitting
US-2020049300-A1 · Feb 13, 2020 · US
System and method of monitoring a diagnostic system of a process control system
US-2020011755-A1 · Jan 9, 2020 · US
Micronized dry barite powder bulk movement
US-10322871-B2 · Jun 18, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B65D90/10?
- CPC B65D90/10 is the Cooperative Patent Classification code for “Manholes; Inspection openings; Covers therefor.”
- How many patents are filed under CPC B65D90/10 (Manholes; Inspection openings; Covers therefor)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC B65D90/10 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).